LCD12864单片机程序画线，画点，字母，汉字等含有基本驱动和基本绘图函数 -

/*--------------------------------------------------------------*/
//读出指令(状态)
unsigned char LCD_read_cmd(void)
{
unsigned char read_cmd;
Data_IO = 0xff; //输入
RS = 0; //指令
RW = 1; //读出
E = 1; //高电平读出
read_cmd = Data_IO; //指令
E = 0;
return (read_cmd);
}
/*--------------------------------------------------------------*/
//读出数据
//先只须空读一次, 以后接着就无须空读
//空读之后读出的数据都是有效的!!!
unsigned char LCD_read_dat(void)
{
unsigned char read_dat;
Data_IO = 0xff; //输入
RS = 1; //数据
RW = 1; //读出
E = 1; //高电平读出
read_dat = Data_IO; //数据
E = 0;
return (read_dat);
}
/*--------------------------------------------------------------*/
//检查忙标志位
void LCD_check_busy(void)
{
unsigned char lcd_status;
do{
lcd_status = LCD_read_cmd();
}while(lcd_status & 0x80);
}
/*--------------------------------------------------------------*/
//写入指令
void LCD_write_cmd(unsigned char cmd)
{
LCD_check_busy();
RS = 0; //指令
RW = 0; //写入
Data_IO = cmd; //指令
E = 1;
E = 0; //下降沿写入
}
/*--------------------------------------------------------------*/
//写入数据
void LCD_write_dat(unsigned char dat)
{
LCD_check_busy();
RS = 1; //数据
RW = 0; //写入
Data_IO = dat; //数据
E = 1;
E = 0; //下降沿写入
}
/*--------------------------------------------------------------*/
//液晶字节定位(8*1)
//液晶规划:
//x: 0 - 7 (行)
//y: 0 -127 (列)
void LCD_byte_pos(unsigned char x, unsigned char y)
{
if(y < 64) LCD_sel_left //左半屏
else {y -= 64; LCD_sel_right} //右半屏
LCD_write_cmd(X_Page_Addr + x); //页地址0-7
LCD_write_cmd(Y_Col_Addr + y); //列地址0-63
}
/*--------------------------------------------------------------*/
//液晶字符定位(8*8)
//液晶规划:
//x: 0 - 7 (行)
//y: 0 -15 (列)
void LCD_char_pos(unsigned char x, unsigned char y)
{
y <<= 3;
LCD_byte_pos(x, y);
}
/*--------------------------------------------------------------*/
//显示清屏
void LCD_clr_scr(unsigned char sel_dat)
{
unsigned char i, j;
if(sel_dat == 0) LCD_sel_left
else if(sel_dat == 1) LCD_sel_right
else if(sel_dat == 2) LCD_sel_all
for(j = 0; j < 8; j++)
{
LCD_write_cmd(X_Page_Addr + j);
LCD_write_cmd(Y_Col_Addr);
for(i = 0; i < 64; i++) LCD_write_dat(0x00);
}
}
/*--------------------------------------------------------------*/
//显示清行
//row: 0 - 7 共8行
void LCD_clr_row(unsigned char row)
{
unsigned char i;
LCD_sel_all
LCD_write_cmd(Y_Col_Addr);
LCD_write_cmd(X_Page_Addr + row);
for(i = 0; i < 64; i++) LCD_write_dat(0x00);
}
/*--------------------------------------------------------------*/
//读出8bytes数据
//液晶规划:
//x: 0 - 7 (行)
//y: 0 -15 (列)
void LCD_read_8bytes(unsigned char x, unsigned char y, unsigned char *read_dat)
{
unsigned char i;
LCD_char_pos(x, y); LCD_read_dat(); //空读一次!!!
for(i = 0; i < 8; i++)
{
*read_dat = LCD_read_dat();
read_dat++;
}
}
/*--------------------------------------------------------------*/
//#if (Font_type == 0) //(8*16字体)
/*--------------------------------------------------------------*/
//液晶字符输出(8*16字体)
//x: 0 -3 (行)
//y: 0 -15 (列)
void LCD_printc16(unsigned char x, unsigned char y, unsigned char c_dat)
{
unsigned char i, j;
for(j = 0; j < 2; j++)
{
LCD_char_pos((x * 2 + j), y);
for(i = 0; i < 8; i++) LCD_write_dat(Font_code16[c_dat - 32][8 * j + i]);
}
}
/*--------------------------------------------------------------*/
//液晶字符串输出(8*16字体)
//x: 0 - 3 (行)
//y: 0 -15 (列)
void LCD_prints16(unsigned char x, unsigned char y, unsigned char *s_dat)
{
while(*s_dat) LCD_printc16(x, y++, *s_dat++);
}
/*--------------------------------------------------------------*/
//#elif (Font_type == 1) //(8*8字体)
/*--------------------------------------------------------------*/
//液晶字符输出(8*8字体)
//x: 0 - 7 (行)
//y: 0 -15 (列)
void LCD_printc(unsigned char x, unsigned char y, unsigned char c_dat)
{
unsigned char i;
LCD_char_pos(x, y);
LCD_write_dat(0x00); //补空, 1bytes
for(i = 0; i < 6; i++) LCD_write_dat(Font_code[c_dat - 32][i]);
LCD_write_dat(0x00); LCD_write_dat(0x00); //补空, 2bytes
}
/*--------------------------------------------------------------*/
//液晶字符输出(6*8字体)
//x: 0 - 7 (行)
//y: 0 -21 (列)
void LCD_printcs(unsigned char x, unsigned char y, unsigned char c_dat)
{
unsigned char i;
y = y * 6 + 1; //最左边和最右边各空一字节
//LCD_write_dat_pos(x, y, 0x00); //前面补一个空字节
for(i = 0; i < 6; i++) LCD_write_dat_pos(x, y + i + 1, Font_code[c_dat - 32][i]);
}
/*--------------------------------------------------------------*/
//液晶字符串输出(6*8字体)
//x: 0 - 3 (行)
//y: 0 -21 (列)
/*void LCD_printss(unsigned char x, unsigned char y, unsigned char *s_dat)
{
while(*s_dat) LCD_printcs(x, y++, *s_dat++);
}
#endif
/*--------------------------------------------------------------*/
//液晶字符串输出(8*8字体)
//x: 0 - 7 (行)
//y: 0 -15 (列)
void LCD_prints(unsigned char x, unsigned char y, unsigned char *s_dat)
{
while(*s_dat) LCD_printc(x, y++, *s_dat++);
}
/*--------------------------------------------------------------*/
//液晶字符反色区域(8*8字体)
//x: 0 - 7 (行)
//y: 0 -15 (列)
void LCD_inverse(unsigned char x, unsigned char y)
{
unsigned char i;
unsigned char read_buffer[8];
LCD_read_8bytes(x, y, read_buffer);
LCD_char_pos(x, y);
for(i = 0; i < 8; i++) LCD_write_dat(~read_buffer[i]);
}
/*--------------------------------------------------------------*/
//液晶字符下划线区域(8*8字体)
//x: 0 - 7 (行)
//y: 0 -15 (列)
//attr: =1, 添加下划线
// =0, 删除下划线
void LCD_underline(unsigned char x, unsigned char y, unsigned char attr)
{
unsigned char i;
unsigned char read_buffer[8];
LCD_read_8bytes(x, y, read_buffer);
LCD_char_pos(x, y);
if(attr) for(i = 0; i < 8; i++) LCD_write_dat(read_buffer[i] | 0x80);
else for(i = 0; i < 8; i++) LCD_write_dat(read_buffer[i] & ~0x80);
}
/*--------------------------------------------------------------*/
//液晶反色显示
void LCD_scr_inverse(void)
{
unsigned char i, j;
for(j = 0; j < 8; j++)
{
for(i = 0; i < 16; i++) LCD_inverse(j, i);
}
}
/*--------------------------------------------------------------*/
//#if Font_type //(8*8字体)
/*--------------------------------------------------------------*/
//液晶字符反色输出(8*8字体)
//x: 0 - 7 (行)
//y: 0 -15 (列)
void LCD_inversec(unsigned char x, unsigned char y)
{
LCD_inverse(x, y);
}
/*--------------------------------------------------------------*/
//液晶字符加下划线(8*8字体)
//x: 0 - 7 (行)
//y: 0 -15 (列)
//attr: =1, 添加下划线
// =0, 删除下划线
void LCD_underlinec(unsigned char x, unsigned char y, unsigned char attr)
{
LCD_underline(x, y, attr);
}
/*--------------------------------------------------------------*/
//#else //(8*16字体)
/*--------------------------------------------------------------*/
//液晶字符反色输出(8*16字体)
//x: 0 - 3 (行)
//y: 0 -15 (列)
void LCD_inverse16(unsigned char x, unsigned char y)
{
x <<= 1;
LCD_inverse(x, y);
LCD_inverse(x+1, y);
}
/*--------------------------------------------------------------*/
//液晶字符加下划线(8*16字体)
//x: 0 - 3 (行)
//y: 0 -15 (列)
//attr: =1, 添加下划线
// =0, 删除下划线
void LCD_underline16(unsigned char x, unsigned char y, unsigned char attr)
{
x <<= 1;
LCD_underline(x + 1, y, attr);
}
//#endif
/*--------------------------------------------------------------*/
//液晶字符串反色输出
//x: 0 -7 (行)
//y: 0 -15 (列)
//num: num < 16 - y
void LCD_inverses(unsigned char x, unsigned char y, unsigned char num)
{
while(num--) LCD_inversec(x, y++);
}
/*--------------------------------------------------------------*/
//液晶字符串加下划线
//x: 0 -7 (行)
//y: 0 -15 (列)
//num: num < 16 - y
//attr: =1, 添加下划线
// =0, 删除下划线
void LCD_underlines(unsigned char x, unsigned char y, unsigned char num, unsigned char attr)
{
while(num--) LCD_underlinec(x, y++, attr);
}
/*--------------------------------------------------------------*/
//液晶汉字输出(16*16字体)
//取码规则: 低位在前, 列行扫描, 阴码(1-亮, 0-灭)
//x: 0 - 3 (行)
//y: 0 - 7 (列)
void LCD_printch(unsigned char x, unsigned char y, unsigned char code *h_dat)
{
unsigned char i, j;
x <<= 1; y <<= 1;
for(j = 0; j < 2; j++)
{
LCD_char_pos((x + j), y);
for(i = 0; i < 16; i++) LCD_write_dat(h_dat[16 * j + i]);
}
}
/*--------------------------------------------------------------*/
//液晶汉字词组输出(16*16字体)
//取码规则: 低位在前, 列行扫描, 阴码(1-亮, 0-灭)
//x: 0 - 3 (行)
//y: 0 - 7 (列)
//num: num < 8 - y
//一次最多显示八个汉字!
void LCD_printsh(unsigned char x, unsigned char y, unsigned char code *h_dat, unsigned char num)
{
unsigned char i;
for(i = 0; i < num; i++) {LCD_printch(x, y++, h_dat); h_dat += 32;}
}
/*--------------------------------------------------------------*/
//液晶汉字输出(16*16字体)
//查表显示输出
//取码规则: 低位在前, 列行扫描, 阴码(1-亮, 0-灭)
//x: 0 - 3 (行)
//y: 0 - 7 (列)
void LCD_showch(unsigned char x, unsigned char y, unsigned char code *dat)
{
unsigned char i;
for(i = 0; i < GB_16_num; i++)
{
if((GB_16[i].Index[0] == dat[0]) && (GB_16[i].Index[1] == dat[1])) break;
}
LCD_printch(x, y, GB_16[i].Msk);
}
/*--------------------------------------------------------------*/
//液晶汉字词组输出(16*16字体)
//查表显示输出
//取码规则: 低位在前, 列行扫描, 阴码(1-亮, 0-灭)
//x: 0 - 3 (行)
//y: 0 - 7 (列)
//num: num < 8 - y
void LCD_showsh(unsigned char x, unsigned char y, unsigned char code *dat)
{
while(*dat) {LCD_showch(x, y++, dat); dat += 2;} //一个汉字GB码由2个字节组成
}
/*--------------------------------------------------------------*/
//液晶汉字反色区域(16*16字体)
//x: 0 - 3 (行)
//y: 0 - 7 (列)
void LCD_inversech(unsigned char x, unsigned char y)
{
x <<= 1;
y <<= 1;
LCD_inverse(x, y);
LCD_inverse(x, y+1);
LCD_inverse(x+1, y);
LCD_inverse(x+1, y+1);
}
/*--------------------------------------------------------------*/
//液晶汉字词组反色区域(16*16字体)
//x: 0 - 3 (行)
//y: 0 - 8 (列)
//num: num < 8 - y 汉字个数
void LCD_inversesh(unsigned char x, unsigned char y, unsigned char num)
{
while(num--) LCD_inversech(x, y++);
}
/*--------------------------------------------------------------*/
//#if Font_type //(8*8字体)
/*--------------------------------------------------------------*/
//定位输出数字
//x: 0 - 7 (行)
//y: 0 - 15/20 (列)
//num: 0 - 65535 要显示的数字
//num_bit: 0 - 5 数字的位数
//num_font: =0,6*8 输出字体
// =1,8*8
/*void LCD_printn(unsigned char x, unsigned char y, unsigned int num, unsigned char num_bit, unsigned char num_font)
{
char i;
unsigned char ii;
unsigned char dat[6];
for(i = 0; i < 6; i++) dat[i] = 0; i = 0; //初始化数据
while(num / 10) //拆位
{
dat[i] = num % 10; //最低位
num /= 10; i++;
}
dat[i] = num; //最高位
ii = i; //保存dat的位数
for(; i >= 0; i--) dat[i] += 48; //转化成ASCII
for(i = 0; i < num_bit; i++)
if(num_font)LCD_printc(x, y + i, ' '); //清显示区域
else LCD_printcs(x, y + i, ' '); //清显示区域
for(i = ii; i >= 0; i--)
if(num_font)LCD_printc(x, y++, dat[i]); //输出数值
else LCD_printcs(x, y++, dat[i]); //输出数值
}
/*--------------------------------------------------------------*/
//#else //(8*16字体)
/*--------------------------------------------------------------*/
//定位输出数字
//x: 0 - 3 (行)
//y: 0 - 15 (列)
//num: 0 - 65535 要显示的数字
//num_bit: 0 - 5 数字的位数
void LCD_printn(unsigned char x, unsigned char y, unsigned int num, unsigned char num_bit)
{
char i;
unsigned char ii;
unsigned char dat[6];
for(i = 0; i < 6; i++) dat[i] = 0; i = 0; //初始化数据
while(num / 10) //拆位
{
dat[i] = num % 10; //最低位
num /= 10; i++;
}
dat[i] = num; //最高位
ii = i; //保存dat的位数
for(; i >= 0; i--) dat[i] += 48; //转化成ASCII
for(i = 0; i < num_bit; i++)
LCD_printc(x, y + i, ' '); //清显示区域
for(i = ii; i >= 0; i--)
LCD_printc(x, y++, dat[i]); //输出数值
}
//#endif
/*--------------------------------------------------------------*/
//液晶定位写入数据一个字节
//液晶规划:
//x: 0 - 7 (页)
//y: 0 -127 (列)
void LCD_write_dat_pos(unsigned char x, unsigned char y, unsigned char dat)
{
LCD_byte_pos(x, y);
LCD_write_dat(dat);
}
/*--------------------------------------------------------------*/
//液晶定位读出数据一个字节
//液晶规划:
//x: 0 - 7 (页)
//y: 0 -127 (列)
unsigned char LCD_read_dat_pos(unsigned char x, unsigned char y)
{
unsigned char read_dat;
LCD_byte_pos(x, y);
read_dat = LCD_read_dat(); //dummy读
read_dat = LCD_read_dat(); //数据有效
return (read_dat);
}
/*--------------------------------------------------------------*/
//显示128X64图片
//取码规则: 低位在前, 列行扫描, 阴码(1-亮, 0-灭)
void LCD_picture(unsigned char code *img_dat)
{
unsigned char i, j;
for(j = 0; j < 8; j++)
{
for(i = 0; i < 128; i++)
{
LCD_write_dat_pos(j, i, img_dat[j * 128 + i]);
}
}
}
/*--------------------------------------------------------------*/
//定位显示指定大小图片
//取码规则: 低位在前, 列行扫描, 阴码(1-亮, 0-灭)
//pag: 0 - 7 页坐标
//col: 0 - 127 列坐标
//x: 0 - (127-col) 图片宽
//y: 0 - (63-pag*8) 图片高
/*void LCD_pos_picture(unsigned char pag, unsigned char col, unsigned char x, unsigned char y, unsigned char code *img_dat)
{
unsigned char i, j;
y = (y + 4) >> 3; //四舍五入
for(j = 0; j < y; j++)
{
for(i = 0; i < x; i++)
{
LCD_write_dat_pos(pag + j, col + i, img_dat[j * x + i]);
}
}
}
/*--------------------------------------------------------------*/
//画点函数
//x: 0 - 127 横坐标
//y: 0 - 63 列坐标
//attr: =1, 画点
// =0, 消点
void LCD_pixel(unsigned char x, unsigned char y, unsigned char attr)
{
unsigned char pixel_dat, temp_dat, yy;
yy = y >> 3; //划分到页
pixel_dat = LCD_read_dat_pos(yy, x);//读出数据
temp_dat = 0x01 << (y & 0x07); //页中的点
if(attr) pixel_dat |= temp_dat; //画点
else pixel_dat &= ~temp_dat; //消点
LCD_write_dat_pos(yy, x, pixel_dat);//写入组合数据
}
/*--------------------------------------------------------------*/
//画横线
//y: 0 - 63 列坐标
//attr: =1, 画线
// =0, 消线
void LCD_line_h(unsigned char y, unsigned char attr)
{
unsigned char i;
for(i = 0; i < 128; i++) LCD_pixel(i, y, attr);
}
/*--------------------------------------------------------------*/
//画竖线
//x: 0 - 128 横坐标
//attr: =1, 画线
// =0, 消线
void LCD_line_v(unsigned char x, unsigned char attr)
{
unsigned char i;
for(i = 0; i < 64; i++) LCD_pixel(x, i, attr);
}
/*--------------------------------------------------------------*/
//显示直线
//x: 0 - 127 横坐标
//y: 0 - 63 纵坐标
//attr: =1, 画线
// =0, 消线
void LCD_line(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, unsigned char attr)
{
char dx, dy;
char inc_x, inc_y;
int xerr = 0, yerr = 0; //初始化变量
unsigned char i, ds;
dx = x2 - x1; //计算坐标增量
dy = y2 - y1;
if(dx > 0) inc_x = 1; //设置单步方向
else
{
if(dx == 0) {inc_x = 0; } //垂直线
else {inc_x = -1; dx = -dx;}
}
if(dy > 0) inc_y = 1; //设置单步方向
else
{
if(dy == 0) {inc_y = 0; } //水平线
else {inc_y = -1; dy = -dy;}
}
if(dx > dy) ds = dx; //选取基本增量坐标轴
else ds = dy;
for(i = 0; i <= ds+1; i++) //画线输出
{
LCD_pixel(x1, y1, attr); //画点
xerr += dx;
yerr += dy;
if(xerr > ds)
{
xerr -= ds;
x1 += inc_x;
}
if(yerr > ds)
{
yerr -= ds;
y1 += inc_y;
}
}
}
/*--------------------------------------------------------------*/
//显示方形
//x: 0 - 127 横坐标
//y: 0 - 63 纵坐标
//attr: =1, 画方
// =0, 删方
void LCD_rectangle(unsigned char x1, unsigned char y1, unsigned char x2, unsigned char y2, unsigned char attr)
{
LCD_line(x1, y1, x2, y1, attr);
LCD_line(x1, y1, x1, y2, attr);
LCD_line(x2, y1, x2, y2, attr);
LCD_line(x1, y2, x2, y2, attr);
}
/*--------------------------------------------------------------*/
//显示圆
//x: 0 - 128 横坐标
//y: 0 - 63 纵坐标
//r： 0 - 63 半径
//attr: =1, 画圆
// =0, 删圆
/*void LCD_circle(unsigned char x, unsigned char y, unsigned char r, unsigned char attr)
{
unsigned char dx, dy = r;
for(dx = 0; dx <= r; dx++)
{
while((r * r + 1 - dx * dx) < (dy * dy)) dy--;
LCD_pixel(x + dx, y - dy, attr);
LCD_pixel(x - dx, y - dy, attr);
LCD_pixel(x - dx, y + dy, attr);
LCD_pixel(x + dx, y + dy, attr);
LCD_pixel(x + dy, y - dx, attr);
LCD_pixel(x - dy, y - dx, attr);
LCD_pixel(x - dy, y + dx, attr);
LCD_pixel(x + dy, y + dx, attr);
}
}
/*--------------------------------------------------------------*/
//复位LCD128*64
void LCD_reset_12864(void)
{
LCD_clr_scr(ASCR); //清全屏
LCD_write_cmd(Display_Off); //关闭显示
LCD_write_cmd(X_Page_Addr); //起始页地址
LCD_write_cmd(Start_Line); //起始行
LCD_write_cmd(Y_Col_Addr); //起始列地址
LCD_write_cmd(Display_On); //开启显示
}
/*--------------------------------------------------------------*/
//初始化LCD128*64
void LCD_init_12864(void)
{
LCD_reset_hard //硬件复位
LCD_reset_soft //软件复位
}

复制代码